This may be a stupid question. Is it proper to hold the clutch all the way down and rev the motor up? If it is, I dont see the need for "double clutching". Last time I double clutched (took the foot off the gas, pushed the clutch to the floor, put tranny in neutral, released my foot off of the clutch, rev'ed up a bit, pushed clutch to the floor again, changed gear, and let off on the clutch) I smelled it burnin!
To my understanding, "heel and toe" works by pushing the brakes and clutch to the floor. Then using your right heel, rev the the car up a bit, WHILE YOUR FOOT IS PRESSING THE THE CLUTCH all the way down, change gears, and then release the clutch when applicable. If thats the way you heel and toe....seems way to easy...
but why the need to double clutch if you can simply push the clutch, rev up (while your holding the clutch), change gears and release the clutch.
it might sound confusing, but im curious as to whether you can rev the motor while the clutch is pushed all the way.
I'm really confused as to why you are asking. There seems to be no real point in your post (not trying to flame). There is no real reason (unless you have tranny issues) to double clutch. Everyone does heel to toe differently, and some may find it easier than others.
FU Tuning
i understand why we double clutch, but the real reason for this post has nothing to do with it, all im asking is whether or not you can rev the motor up while holding the clutch down.
Yes, you can. That's how you match revs, and that has nothing to do with double-clutching.
Double-clutching is to bring the input shaft in synch with the gears. Rev-matching is to bring the output shaft in synch with the wheels.
Double clutching is for older cars and cars without synchros. Nothing else.
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
Team Vision Racing (aka hypsy) wrote:Double clutching is for older cars and cars without synchros. Nothing else.
That's not true. I do it every now and then when driving in traffic and wanting to downshift to 1st. It's easier on the synchros.
I'm pretty sure we've had this discussion before though.
For the most part there's no need for it, but that's not to say it's completely useless.
revving the engine up while pushing the clutch in is the same as revving while in neutral, so its all good!
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all im asking is whether or not you can rev the motor up while holding the clutch down.
I guess I do not understand why you are asking this. Did you try to rev the motor with the clutch in? Did it work? there is your answer.
FU Tuning
sunfiresam wrote:This may be a stupid question. Is it proper to hold the clutch all the way down and rev the motor up?
yea why wouldn't it be? how do you think people do drag launches...
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If it is, I dont see the need for "double clutching".
stop right there. absolutely never is there a reason to double clutch a synchro'd trans. Ever.
...ever.
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To my understanding, "heel and toe" works by pushing the brakes and clutch to the floor. Then using your right heel, rev the the car up a bit, WHILE YOUR FOOT IS PRESSING THE THE CLUTCH all the way down, change gears, and then release the clutch when applicable. If thats the way you heel and toe....seems way to easy...
heel and toe has absolutely nothing to do with double clutching, but since you've brought it up...
if you think heel/toe is super easy without time on a road course, then you're doing it wrong.
entering a corner, you're in gear and on the brakes. no other pedal is being pushed.
as you begin turning, with your toe still on the brakes maintaining whatever threshold is needed, you (quickly)
-push the clutch in
-select next lowest gear
-rev the engine to match the RPMs needed
-pop the clutch out
if you do it right, the downshift will be seamless which, if you're driving the car hard thru a corner and are at the brink of traction, will let you stay on the track and not put it into the sand pit / woods/ retaining wall
double clutching and heel-toe downshifting are not related in the least sense.
heel-toe downshifting is to match the engine to the drive wheels while being able to use the brakes at the same time.
double-clutching is how you get the internal components of a non-synchronized transmission spinning at the same speed so they easily mesh together and don't make nasty grinding/popping sounds and putting extra wear on internal components.
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but why the need to double clutch if you can simply push the clutch, rev up (while your holding the clutch), change gears and release the clutch.
because if you don't let the clutch touch the flywheel while you're in neutral, you won't spin the internal components of the transmission up to the same speed as the engine. if you free rev the engine with the clutch in, all you're doing is free revving the engine. get it?
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it might sound confusing, but im curious as to whether you can rev the motor while the clutch is pushed all the way.
yes you can, but this has nothing to do with what you're asking.
The OP doesn't even know what he's asking I don't think. LOL.
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
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stop right there. absolutely never is there a reason to double clutch a synchro'd trans. Ever.
i can think of 1. My case I have a issue in my pressure system for my clutch. Double clutch makes it just a little bit easier to change gears. I have since stopped driving the car. I do not want to break a shift fork again. Still you should not have to double clutch.
FU Tuning
DaFlyinSkwirl (PJ) - BPU++ wrote:stop right there. absolutely never is there a reason to double clutch a synchro'd trans. Ever.
...ever.
Not true. See my post above.
Paul, you anwsered everything I need to know in the most simplest terms; im not surprised to see that you own a n/a 14 sec. cav.
i think where he was trying to get the reving while u have the clutch pushed in is like say u go from 2nd to 3rd and push the clutch in and floor it/give alot of gas and dump the clutch and it causes your car to jump forward alil bit
Nathan Walbourn wrote:i think where he was trying to get the reving while u have the clutch pushed in is like say u go from 2nd to 3rd and push the clutch in and floor it/give alot of gas and dump the clutch and it causes your car to jump forward alil bit
If the car jumps forward, then you're not rev matching correctly. It should feel seemless...
CACC BC Region - DSP
http://www.victoriamotorsports.ca
I know I have to double-clutch on downshifts into second. I think the synchro is going, because without double-clutching, i can't put it into second on a downshift
download some jap honda videos, (s2000) espically, they usually show them driving and you see the foot work.
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